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 Post subject: NFPA 70E Article 130.2(A)(4)
PostPosted: Tue Nov 26, 2019 12:35 pm 

Joined: Fri May 30, 2014 4:37 pm
Posts: 2
I need clarification of what Normal Operating Conditions means as explained in Article 130.2(A)(4)
I understand the Article 130.2(A)(1)(2)(3) but not Article 130.2(A)(4)
(1) Additional Hazards or Increased Risk
(2) Infeasibility
(3) Equipment operating at 50 volts or less
but (4) normal operating conditions confuses me. Is this telling me the justification of why the system may be worked on energized rather then having to de-energized the system.
Iam I missing something.
Any input would be greatly appreciated.
This all has to do with using a EEWP or not.


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 Post subject: Re: NFPA 70E Article 130.2(A)(4)
PostPosted: Tue Nov 26, 2019 2:08 pm 
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Joined: Mon Sep 17, 2007 5:00 pm
Posts: 1508
Location: Scottsdale, Arizona
130.2 is referencing where energized work is permitted.

The 2009 Edition of NFPA 70E introduced the a reference to "interaction" with equipment when determining if an arc flash hazard exists. That created some confusion about what is interaction. Is turning a circuit breaker on or off interaction? Does it require PPE etc.

The 2015 Edition of NFPA 70E introduced "Normal Operation" as a way to determine if "interaction" is normal and requires PPE.

The 2018 Edition refined it even more.

So to answer your question:

130.2(A)(4) is referring normal operation of equipment which involves interacting with equipment - for most equipment this does not meet the definition working on as defined in Article 100 i.e. again, like operating a switch or circuit breaker. If the equipment meets all of the criteria (i.e. you check all the boxes) there is no reason to consider the equipment is unsafe.

Usual disclaimer: This is my opinion and may not represent any particular committee that I am part of.


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